I like how fast paced the gameplay is, and how quickly things escalate. The art is well done, simple but executed well. It's a fun game, and pretty polished, but there are a couple things holding me back from enjoying it as much as I could.
The screen shake and glitchiness gets out of hand really fast, and makes it too hard to process your surroundings or even where you are. It also interfered with the text in the tutorial, which made it a bit hard to read. I do like the idea of the game getting more glitchy and hard to read as things ramp up in intensity, but I think that it could stand to be dialed back a little bit, at least until much later.
The small viewport does make it more chaotic and forces you to react quickly, but makes it frustrating to play when enemies come out of nowhere with little to no time to react. A directional radar could help alleviate this, and could be tuned to be vague enough to still require quick reactions on the part of the player.